Pkg xen devel - Feb 2023 - Bug#1031567: xen: CVE-2022-27672: XSA-426: x86: Cross-Thread Return Address Predictions

Source: xen
Version: 4.17.0+24-g2f8851c37f-2
Severity: grave
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at
security.debian.org>

Hi,

The following vulnerability was published for xen, filling with RC
severity (for ideally fixed before bookworm release):

CVE-2022-27672[0]:
| When SMT is enabled, certain AMD processors may speculatively execute
| instructions using a target from the sibling thread after an SMT mode
| switch potentially resulting in information disclosure.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-27672
    https://www.cve.org/CVERecord?id=CVE-2022-27672
[1] https://xenbits.xen.org/xsa/advisory-426.html

Regards,
Salvatore

Your message dated Fri, 24 Feb 2023 18:35:23 +0000
with message-id <E1pVcuh-007RFH-9q at fasolo.debian.org>
and subject line Bug#1031567: fixed in xen 4.17.0+46-gaaf74a532c-1
has caused the Debian Bug report #1031567,
regarding xen: CVE-2022-27672: XSA-426: x86: Cross-Thread Return Address
Predictions
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner at bugs.debian.org
immediately.)


-- 
1031567: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1031567
Debian Bug Tracking System
Contact owner at bugs.debian.org with problems
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Subject: xen: CVE-2022-27672: XSA-426: x86: Cross-Thread Return Address
Predictions
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